Subframe connectors and stiffeningkit dxf_files ????

I want the subframe connector stuck to the floor, no gap in between it and the floorboard.
I want it to be a straight line between the torisonbar crossmember and the framerail that goes in the back of the car.

Why?.....I understand the straight line....but why to the (thin) floor?

Not wanting to argue or change your mind...just like to understand what I am missing.